Learn more about depression and other neurological disorders

Read on to find out more about the co-occurrence of anxiety and depression and how they can be treated.

The term – Depression

Depression is a condition in which a person feels discouraged, sad, hopeless, unmotivated, or disinterested in life in general. When these feelings last for a short period of time, it may be a case of “the blues.”

But when such feelings last for more than two weeks and when the feelings interfere with daily activities such as taking care of family, spending time with friends, or going to work or school, it’s likely a major depressive episode.

Major depression is a treatable illness that affects the way a person thinks, feels, behaves, and functions. Depression is one of the most common mental disorders in the United States. In 2014, around 15.7 million adults age 18 or older in the U.S. Had experienced at least one major depressive episode in the last year, which represented 6.7 percent of all American adults. At any point in time, 3 to 5 percent of adults suffer from major depression; The lifetime risk is about 17 percent. As many as 2 out of 100 young children and 8 out of 100 teens may have serious depression.

There are types of depression

Three main types of depressive disorders-major depression, persistent depressive disorder, and bipolar disorder-can occur with any of the anxiety disorders.

Major depression involves at least five of these symptoms for a two-week period. Such an episode is disabling and will interfere with the ability to work, study, eat, and sleep. Major depressive episodes may occur once or twice in a lifetime, or they may recur frequently. They may also take place spontaneously, during or after the death of a loved one, a romantic breakup, a medical illness, or other life event.

Some people with major depression may feel that life is not worth living and some will attempt to end their lives.

Persistent depressive disorder, or PDD, (formerly called dysthymia) is a form of depression that usually continues for at least two years. Although it is less severe than major depression, It involves the same symptoms as major depression, mainly low energy, poor appetite or overeating, and insomnia or oversleeping. It can manifest as stress, irritability, and mild anhedonia, which is the inability to derive pleasure from most activities.

Types of depression
Nervous breakdown

People with PDD might be thought of as always seeing the glass as half empty.
Bipolar disorder, once called manic-depression, is characterized by a mood cycle that shifts from severe highs (mania) or mild highs (hypomania) to severe lows (depression).

During the manic phase, a person may experience abnormal or excessive elation, irritability, a decreased need for sleep, grandiose notions, increased talking, racing thoughts, increased sexual desire, markedly increased energy, poor judgment, and inappropriate social behavior.

During the depressive phase, a person experiences the same symptoms as would a sufferer of major depression. Mood swings from manic to depressive are often gradual, although occasionally they can occur abruptly.
Look for details here:

http://www.healthline.com/health/bipolar-disorder

The Difference Between Depression and Mental Disorders

Depression and anxiety disorders are different, but people with depression often experience symptoms similar to those of an anxiety disorder, such as nervousness, irritability, and problems sleeping and concentrating. But each disorder has its own causes and its own emotional and behavioral symptoms.

Many people who develop depression have a history of an anxiety disorder earlier in life. There is no evidence of one disorder.

Perinatal Depression:
full-blown major depression during pregnancy or after delivery (postpartum depression).

Seasonal Affective Disorder (SAD):
SAD is a type of depression that comes and goes with the seasons, usually starting in the late fall and early winter and going away during the spring and summer.

Psychotic Depression:
This type of depression occurs when a person has severe depression and some form of psychosis, such as having disturbing false fixed beliefs (delusions) or hearing or seeing upsetting things that others can not hear or see (hallucinations).
https://www.nimh.nih.gov/health/publications/depression/index.shtml#pub4
https://www.nimh.nih.gov/health/topics/depression/index.shtml

WHO response

Depression is one of the priority conditions covered by WHO’s Mental Health Gap Action Programme (mhGAP). The Programme aims to help countries increase services for people with mental, neurological and substance use disorders, through care provided by health workers who are not specialists in mental health. The Programme asserts that with proper care, psychosocial assistance and medication, tens of millions of people with mental disorders, including depression, could begin to lead normal lives – even where resources are scarce.
Read in detail here:
https://en.wikipedia.org/wiki/Depression_%28mood%29
http://www.who.int/mediacentre/factsheets/fs369/en/